WREN & MARTIN's English grammar-Modals (Must, Ought to, Used to): 10 Practice MCQs
Modals (Must, Ought to, Used to): 10 Practice MCQs
1. We _______ obey the laws of the land.
A. must
B. used to
C. ought
D. might
2. You _______ to help your elderly neighbors.
A. must
B. used to
C. ought
D. should
3. I _______ to play cricket when I was a boy.
A. must
B. ought
C. used
D. should
4. All _______ die; such is the law of nature.
A. used to
B. ought to
C. must
D. could
5. We _______ to love our neighbors.
A. must
B. ought
C. used
D. might
6. You _______ look at the map before you start.
A. must
B. used to
C. ought
D. could
7. There _______ to be a famous temple here years ago.
A. must
B. ought
C. used
D. should
8. Candidates _______ answer all the questions.
A. used to
B. must
C. ought
D. might
9. We _______ to have finished the work by now.
A. used
B. must
C. ought
D. can
10. She _______ not to have spoken like that.
A. must
B. used
C. ought
D. should
Answer Key
| Question | Answer | Rule / Explanation |
| 1 | A | Must is used to express strong obligation or compulsion. |
| 2 | C | Ought to expresses moral obligation (hint: 'to' follows it). |
| 3 | C | Used to expresses a discontinued habit in the past. |
| 4 | C | Must is used for things that are certain or inevitable. |
| 5 | B | Ought to is used for moral duty or desirability. |
| 6 | A | Must is used to express the speaker's advice or recommendation. |
| 7 | C | Used to can express a past state or existence that is no longer true. |
| 8 | B | Must is used in formal notices or instructions. |
| 9 | C | Ought to have expresses an unfulfilled expectation. |
| 10 | C | Ought not to have expresses disapproval of a past action. |
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